What is ARP?
ARP - Quiz
IP Address Netmask
dmesg Command Output
Iterative Concurrent Servers
Check Port MapperProcess
Ephemeral Port Numbers
TPC/UDP Port Numbers-Quiz
inetd Super Server
Determining Network Connections - Exercise
Using netstat to view active TCP connections (Linux)
Use netstat to view active TCP connections.
This is a Java applet
This exercise uses a Java applet to simulate a UNIX command line and allows you to practice entering commands. If you do not have Java active in your browser or are behind a firewall that does not allow Java applets, you will not be able to complete this exercise. If you do not see the applet below, click
button to continue with the course. You will receive full credit for this exercise.
This exercise is not scored. When you have completed the exercise, click the OK, I'm Done button to continue with the course.
In this exercise, you will use
to view active TCP connections on your machine. Start the simulation below and work through the situation presented. When you have completed the exercise, click the OK, I'm Done button to review the exercise solution.